Problems
Repeated numbers
Repeated numbers
Enter numbers from 0 to 9 in different order, one in each line. You must enter the numbers till the same number repeats itself for the first time.
####Incoming data
Each line contains one of the numbers 0, 1, 2, ..., 9.
####Output data
Displays the number of reads before the first repetition.
Examples
Input example #1
3 6 5 6 7
Output example #1
4
Note
The solution of the problem can be modeled by the behavior of "Codey Rocky", which recognizes the colors of the cards marked with numbers 0..9.